vortex_array/arrays/decimal/vtable/
operations.rs

1// SPDX-License-Identifier: Apache-2.0
2// SPDX-FileCopyrightText: Copyright the Vortex contributors
3
4use vortex_dtype::match_each_decimal_value_type;
5use vortex_error::VortexResult;
6
7use crate::arrays::DecimalArray;
8use crate::arrays::DecimalVTable;
9use crate::scalar::DecimalValue;
10use crate::scalar::Scalar;
11use crate::vtable::OperationsVTable;
12
13impl OperationsVTable<DecimalVTable> for DecimalVTable {
14    fn scalar_at(array: &DecimalArray, index: usize) -> VortexResult<Scalar> {
15        Ok(match_each_decimal_value_type!(array.values_type(), |D| {
16            Scalar::decimal(
17                DecimalValue::from(array.buffer::<D>()[index]),
18                array.decimal_dtype(),
19                array.dtype().nullability(),
20            )
21        }))
22    }
23}
24
25#[cfg(test)]
26mod tests {
27    use vortex_buffer::buffer;
28    use vortex_dtype::DecimalDType;
29    use vortex_dtype::Nullability;
30
31    use crate::Array;
32    use crate::arrays::DecimalArray;
33    use crate::arrays::DecimalVTable;
34    use crate::scalar::DecimalValue;
35    use crate::scalar::Scalar;
36    use crate::validity::Validity;
37
38    #[test]
39    fn test_slice() {
40        let array = DecimalArray::new(
41            buffer![100i128, 200i128, 300i128, 4000i128],
42            DecimalDType::new(3, 2),
43            Validity::NonNullable,
44        )
45        .to_array();
46
47        let sliced = array.slice(1..3).unwrap();
48        assert_eq!(sliced.len(), 2);
49
50        let decimal = sliced.as_::<DecimalVTable>();
51        assert_eq!(decimal.buffer::<i128>(), buffer![200i128, 300i128]);
52    }
53
54    #[test]
55    fn test_slice_nullable() {
56        let array = DecimalArray::new(
57            buffer![100i128, 200i128, 300i128, 4000i128],
58            DecimalDType::new(3, 2),
59            Validity::from_iter([false, true, false, true]),
60        )
61        .to_array();
62
63        let sliced = array.slice(1..3).unwrap();
64        assert_eq!(sliced.len(), 2);
65    }
66
67    #[test]
68    fn test_scalar_at() {
69        let array = DecimalArray::new(
70            buffer![100i128],
71            DecimalDType::new(3, 2),
72            Validity::NonNullable,
73        );
74
75        assert_eq!(
76            array.scalar_at(0).unwrap(),
77            Scalar::decimal(
78                DecimalValue::I128(100),
79                DecimalDType::new(3, 2),
80                Nullability::NonNullable
81            )
82        );
83    }
84}
vortex_array/arrays/decimal/vtable/operations.rs

vortex_array/arrays/decimal/vtable/
operations.rs
